/*
 * (C) APUE
 * The effect in variables and registers when using longjmp.
 */
#include "apue.h"
#include <setjmp.h>
static void f1(int, int, int, int);
static void f2(void);
static jmp_buf	jmpbuffer;
static int globval;

int main(void)
{
	int autoval;
	register int regival;
	volatile int volaval;
	static int statval;

	globval = 1; autoval = 2; regival = 3; volaval = 4; statval = 5;
	if (setjmp(jmpbuffer) != 0)
	{
		printf("after longjmp:\n");
		printf("globval = %d, autoval = %d, regival = %d, volaval = %d, statval = %d\n",
				globval, autoval, regival, volaval, statval);
		exit(0);
	}

	/* set variables after setjmp, but before longjmp */
	globval = 95; autoval = 96; regival = 97; volaval = 98; statval = 99;
	f1(autoval, regival, volaval, statval);
	exit(0);
}

static void f1(int i, int j, int k, int l)
{
	printf("in fi().:\n");
	printf("autoval = %d, regival = %d, volaval = %d, statval = %d\n", i, j, k, l);
	f2();
}

static void f2(void)
{
	longjmp(jmpbuffer, 1);
}
